JPS6232033A - Manufacturing method of grooved waxing material - Google Patents

Abstract

PURPOSE:To obtain a grooved wadding material having volume feeding, by grooving the urethane foam adhered to a face sheet to form not only two almost perfectly cut-out parts between unprocessed parts but also a part cut out so as to leave a part between said parts and drawing two parts near to each other to adhere a lining sheet and the part cut out so as to leave a part. CONSTITUTION:Grooving processing is applied to the urethane foam part 2 of a sheet having a two-layered structure by a knife or a rubstone so as to leave a reguired part. Grooving is performed so that two almost perfectly cut- out parts 4 are generated between unprocessed parts 3 and a part 5 cut out so as to leave a part is generated between two almost perfectly cut-out parts 4. The almost perfectly cutting-out grooving width (a) is set to the difference between the thickness (b) of the almost perfectly cut-out part and the thickness (c) of the part cut out so as to leave a part. The face sheet of thus obtained groove sheet is drawn near to form a groove in the side of the face sheet. Because the almost perfectly cutting-out grooving width (a) is set as mentioned above, the face sheet is made almost flush with the surface of urethane form 2 by drawing-near and a lining sheet 6 is adhered to this flattened surface.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for producing a grooved rewatting material, particularly a grooved rewatting material for interior use, which is useful for automobile interior materials, seat facing materials, furniture interior materials, and the like.

Traditionally, grooved rewatting materials for interiors used for automobile seats, etc. have been produced by bonding urethane foam between the lining and outer material, or by welding German urethane foam at high frequency, as shown in Figure 5. Grooved warating material was obtained.

The grooved warating material obtained by the above method has the outer material and lining bonded together, so when high-frequency welding is performed, the urethane foam is pulled by the outer material and the corners are rounded, resulting in a lack of volume. be.

In order to improve this point, the inventors of the present invention filed a patent application in 1983-22.
No. 6502, the outer material (1) and the urethane foam (2) are adhered or fused to obtain a multilayer sheet as shown in FIG. 6A, and the urethane foam layer of the obtained sheet is
As shown in Figure B, grooves are cut with a knife or a grindstone leaving the required portions, and after the outer fabric is aligned, grooves are made on the outer fabric side (Figure 6C), and this is glued to the lining (Figure 6C). Figure D)
However, if the urethane foam part is completely cut out by grooving the urethane foam, it is necessary to glue it to the lining with a thin urethane foam that has been glued or sewn in advance. . In this case, a thin urethane foam (
A process of adhering 7) to the lining is required, resulting in high cost.

In addition, by grooving a part of the urethane foam part, for example,
. . , the grooves of the product may have curved portions, resulting in a lack of volume, as shown in FIG. 6E.

Problems to be Solved The present invention improves the drawbacks of conventional grooved rewatting materials, and provides a method for producing grooved rewatting materials that have sharp corners without roundness in the grooves and have a voluminous feel. By doing this, the urethane foam (2) bonded to the outer material (1) is cut into grooves to obtain a warating material with a high-quality feel, and two almost complete cuts are made between the unprocessed part (3). Create a cut out part (5) leaving a part between the removed part (4) and the above two almost completely cut out parts (4), align the width, and add a small amount to the lining (6). The above problem was solved by gluing the cut out parts (5) in a row.

This will be explained in detail below.

First, the outer material (1) and the urethane foam (2) are bonded together (FIG. 2).The outer material used in the present invention can be made of leather, vinyl chloride leather, cotton, nylon, polyester, or the like. These outer materials may have any desired texture or may be embossed. The back side of this outer material is adhered to the urethane foam. The urethane foam that can be used may be a soft 1-cretane foam, a flame-retardant soft urethane foam, a flame-retardant urethane foam for flame laminate, or the like. A typical urethane foam is a flame retardant flame laminate urethane foam. The thickness of the urethane foam is 5 to 15011I
I111 is preferably 7 to 20 #Im. The density of the urethane foam is 16-50Ky/rd, more preferably 20-40Kg/d. These are not particularly different from the urethane foams used in conventional grooved wattlings.

The outer material and the urethane foam may be bonded together using an adhesive. Further, if the urethane foam is a urethane foam for frame lamination, it may be bonded by frame lamination. Furthermore, in the case of general urethane foam, a urethane foam A for frame lamination may be interposed between the lining urethane foams and both sides may be adhered.

As the adhesive, a material that is soft enough not to impair the feel of the warating material, such as a rubber adhesive, is suitable.

The resulting two-layered urethane foam portions of Seams 1 to 1 are grooved with a knife or a grindstone, leaving the required portions intact.

The grooving consists of two almost completely cut out sections (4) between the unprocessed section (3) and between the two almost completely cut out sections (4) as shown in Figure 3. This is done so as to leave a part (5) that is cut out.

The width (a) of the groove cut to completely cut out the groove is the difference between the thickness b') of the part completely cut out and the thickness C) of the part cut out in a row.

The outer material of the grooved sheet obtained in this way is aligned in width, and grooves are formed on the outer material side. (Figure 3) Since the width (a) of the groove cut to be cut almost completely is set as above, when the width is adjusted, the surface of the urethane foam opposite to the outer material becomes almost flat. The lining (6) is adhered to this flat surface. (FIG. 4) As the lining, an appropriate material such as vinyl chloride leather, cloth, synthetic resin sheet, non-woven sheet, etc. may be used. Adhesives are used to bond the urethane foam and the lining, e.g.
This may be done using an adhesive such as a rubber adhesive (or a heat-sealing film, such as a thermoplastic urethane film, modified polyamide film, or modified ethylene vinyl acetate copolymer film) on the side of the backing to be adhered. A film such as a thermoplastic resin film having plasticity and adhesive properties may be bonded in advance, and the urethane foam may be fused to the film.
0 seats, more preferably 7 to 20 m, the thickness of the part cut out in a row is about 2 to 10 mm, and the width is 3 to 3
It is preferably 0 mm, especially 5 to 15 mIn. This can provide cushioning properties and a luxurious feel of the warating material.

Effects of the Invention According to the method for producing a grooved warating material of the present invention,
Compared to conventional manufacturing methods, the process can be simplified by only leaving a part of the grooved part and making the cutout part, and the warating material of the product also eliminates the curved surface of the groove, giving it a voluminous and luxurious feel. Also available.

Claims (1)

[Claims] 1. Groove the urethane foam (2) adhered to the outer material (1), and create two almost completely cut out parts (4) between the unprocessed part (3), and the above two almost completely cut out parts. Create a cut out part (5) with a part left between the left part (4), and after aligning the width, glue the lining (6) and the cut out part (5) with at least a part left. A method for producing grooved watting material, characterized by: